Maria Sharapova

Maria Sharapova of Russia serves against Petra Kvitova of the Czech Republic in their women's singles semi-final match on day 11 of the 2012 Australian Open tennis tournament in Melbourne.

Maria Sharapova of Russia serves against Petra Kvitova of the Czech Republic in their women's singles semi-final match on day 11 of the 2012 Australian Open tennis tournament in Melbourne. (AFP/Getty Images)

Maria Sharapova of Russia serves against Petra Kvitova of the Czech Republic in their women's singles semi-final match on day 11 of the 2012 Australian Open tennis tournament in Melbourne.